package com.zcl.javaClassAndObject.inheritance.上溯造型;

/**
 * @Description:
 * @author: zcl
 * @date: 2021/12/10  13:44
 */
public class Wind extends Instrument {

    public static void main(String[] args) {
        Wind flute = new Wind();
        Instrument.tune(flute); // Upcasting
    }
}
